GO FISHING, use SLABSAUCE Fishing Attractant
Results 1 to 4 of 4

Thread: Low voltage readings 535i M30

  1. 10-29-2006, 11:10 AM #1
    Zackb911
    Zackb911 is offline
    Join Date
    Oct 2006
    Location
    Weymouth, Mass
    Posts
    73

    Default Low voltage readings 535i M30

    Hey guys I just replaced my battery but I am suspect of my alternator or voltage regulator. I checked the voltage at the battery with my digital multimeter while running and get 13.17-13.18, when I turn on the lights it dips and holds steady at ~13.02. This seems fairly low to me but seems like the alternator is working should I replace my voltage regulator? I am placing an order with BMA today so I need to know

    Thanks!
    Zack
    Weymouth, Mass
    -1989 Dinan 535i Intercooled Turbo
    -1997 Mercedes Benz E300 Diesel (Daily)
    Reply With Quote Reply With Quote
  2. 10-29-2006, 11:15 AM #2
    Bill R.
    Bill R. is offline Super Moderator
    Join Date
    Jan 2004
    Posts
    4,150

    Default

    .
    Quote Originally Posted by Zackb911
    Hey guys I just replaced my battery but I am suspect of my alternator or voltage regulator. I checked the voltage at the battery with my digital multimeter while running and get 13.17-13.18, when I turn on the lights it dips and holds steady at ~13.02. This seems fairly low to me but seems like the alternator is working should I replace my voltage regulator? I am placing an order with BMA today so I need to know

    Thanks!
    Zack
    Attached Images Attached Images  

    Reply With Quote Reply With Quote
  3. 10-29-2006, 11:36 AM #3
    Anthony (M5 in Calgary)
    Anthony (M5 in Calgary) is offline Major Contributor
    Join Date
    Jan 2004
    Location
    Calgary AB Canada
    Posts
    589

    Default

    Hey Bill, what do you think of Mark Calabrese's voltage regulator upgrade? Adds a series diode between the regulator and ground to bump output by the 0.5V diode drop.
    Anthony
    03/64 production

    '91M5 - 11/90, was mine, it's Jim's now.
    Reply With Quote Reply With Quote
  4. 10-29-2006, 12:26 PM #4
    Zackb911
    Zackb911 is offline
    Join Date
    Oct 2006
    Location
    Weymouth, Mass
    Posts
    73

    Default

    thanks!
    Weymouth, Mass
    -1989 Dinan 535i Intercooled Turbo
    -1997 Mercedes Benz E300 Diesel (Daily)
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. Throttle Body Sensor Readings
    By glen-sj in forum 5 Series BMW
    Replies: 0
    Last Post: 11-04-2009, 09:24 AM
  2. Tell me if these readings make any sense
    By BennyM in forum 5 Series BMW
    Replies: 13
    Last Post: 09-23-2009, 03:21 PM
  3. Sensor Test Readings
    By JMI in forum 5 Series BMW
    Replies: 7
    Last Post: 09-07-2006, 09:24 AM
  4. Low HP and Torque readings
    By Toeks in forum 5 Series BMW
    Replies: 18
    Last Post: 07-25-2006, 01:28 PM
  5. Oil Pressure Readings?
    By Andrew in forum 5 Series BMW
    Replies: 3
    Last Post: 01-03-2006, 11:37 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules